I think the best years to be 'white' are between the ages of say 7-25, after that it doesn't really matter, at least not physically as youth begins to wear off...where it does matter after the age of 25-30 is socially.
From 7-25, being 'white' gives one a physical advantage over others, in that skin is soft, hair silky and luscious, feet bright and clean, and everyone is envious, but after age 25-30, unless took care of self, avoided to much sun, wear and tear begins to take it's effect and the aging process accelerates compared to darker toned people or peoples.
But that's when social advantage kicks in, at least in the West.
There's ups and downs to everything.
But none the less, the world still strives to be 'white', and is why face lightening cream is so popular in India among many males, believe it or not.